Formula#system: remove unnecessary string casts
Formula#system: remove unnecessary string casts

vitorgalvao/brew,konqui/brew,pseudocody/brew,DomT4/brew,mgrimes/brew,maxim-belkin/brew,konqui/brew,EricFromCanada/brew,reitermarkus/brew,Linuxbrew/brew,EricFromCanada/brew,jmsundar/brew,konqui/brew,gordonmcshane/homebrew,rwhogg/brew,amar-laksh/brew_sudo,JCount/brew,vitorgalvao/brew,nandub/brew,muellermartin/dist,mgrimes/brew,staticfloat/brew,Linuxbrew/brew,zmwangx/brew,amar-laksh/brew_sudo,palxex/brew,mistydemeo/homebrew,jmsundar/brew,gregory-nisbet/brew,reelsense/brew,ilovezfs/brew,reelsense/brew,EricFromCanada/brew,EricFromCanada/brew,palxex/brew,mahori/brew,jmsundar/brew,nandub/brew,MikeMcQuaid/brew,bfontaine/brew,muellermartin/dist,sjackman/homebrew,bfontaine/brew,toonetown/homebrew,JCount/brew,sjackman/homebrew,claui/brew,Linuxbrew/brew,tonyg/homebrew,gordonmcshane/homebrew,mgrimes/brew,rwhogg/brew,MikeMcQuaid/brew,claui/brew,staticfloat/brew,toonetown/homebrew,DomT4/brew,claui/brew,claui/brew,JCount/brew,hanxue/linuxbrew,toonetown/homebrew,tonyg/homebrew,reitermarkus/brew,vitorgalvao/brew,aw1621107/brew,mahori/brew,reitermarkus/brew,konqui/brew,nandub/brew,mistydemeo/homebrew,sjackman/homebrew,DomT4/brew,tonyg/homebrew,pseudocody/brew,gregory-nisbet/brew,ilovezfs/brew,mahori/brew,staticfloat/brew,MikeMcQuaid/brew,pseudocody/brew,rwhogg/brew,maxim-belkin/brew,AnastasiaSulyagina/brew,DomT4/brew,ilovezfs/brew,hanxue/linuxbrew,gordonmcshane/homebrew,reelsense/brew,mahori/brew,alyssais/brew,palxex/brew,muellermartin/dist,gregory-nisbet/brew,zmwangx/brew,alyssais/brew,Homebrew/brew,Homebrew/brew,hanxue/linuxbrew,amar-laksh/brew_sudo,aw1621107/brew,nandub/brew,MikeMcQuaid/brew,Homebrew/brew,Homebrew/brew,maxim-belkin/brew,sjackman/homebrew,mistydemeo/homebrew,alyssais/brew,vitorgalvao/brew,aw1621107/brew,Linuxbrew/brew,zmwangx/brew,reitermarkus/brew,AnastasiaSulyagina/brew,AnastasiaSulyagina/brew,JCount/brew,bfontaine/brew